--- product_id: 538578003 title: "FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B)" brand: "fitly" price: "$42.86" currency: USD in_stock: true reviews_count: 5 category: "Fitly" url: https://www.desertcart.us/products/538578003-fitly-soft-flask-5-oz-150-ml-shrink-as-you store_origin: US region: United States of America --- # 150 ml compact capacity Freezable for dual use Ultra-lightweight 20g FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) **Brand:** fitly **Price:** $42.86 **Availability:** ✅ In Stock ## Summary > 💦 Stay light, stay fast, stay hydrated—on the move with FITLY! ## Quick Answers - **What is this?** FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) by fitly - **How much does it cost?** $42.86 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/538578003-fitly-soft-flask-5-oz-150-ml-shrink-as-you) ## Best For - fitly enthusiasts ## Why This Product - Trusted fitly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Conscious & Safe:** 100% BPA & PVC-free materials for guilt-free, reusable hydration. - • **Versatile & Freezable:** Chill your drink or double as an ice pack—hydration meets smart utility. - • **Pocket-Ready Portability:** Folds flat to fit effortlessly in your running or hiking gear—carry less, do more. - • **Hydration that Shrinks with You:** Innovative collapsible design eliminates bounce and slosh for seamless movement. - • **Leak-Proof & Bite-Activated Valve:** Smart mouthpiece ensures spill-free sips exactly when you need them. ## Overview The FITLY Soft Flask is a 150 ml collapsible water bottle designed for active professionals who demand efficient hydration without bulk. Its unique shrink-as-you-drink design prevents sloshing, while the lightweight, BPA- and PVC-free materials ensure safe, eco-friendly use. Leak-proof with a bite valve, it fits easily into pockets or hydration packs and can be frozen to double as an ice pack, making it the ultimate companion for running, hiking, and cycling. ## Description FITLY Flasks are ideal for quick drinks on the run. Gobble up a gel, wet a dry throat, or re-hydrate. Designed to be used while running or biking. Stores directly in your front, side, or back pockets. FITLY Flasks shrink as you drink so nothing ever moves, bounces or rattles. Review: Maraton ve orta mesafe koşulları için çok güzel. Review: I live in Fl, and I run outside. Those two components demand that I hydrate or die. I prefer the land of the living for now, so gimme the H2O. I already had the Fitly minimal pack, just not this particular flask. I originally thought I would have to bite the bullet and get a new pack altogether, but then I found the flask available by itself. I ordered, it arrived, and I have been using it for a couple weeks now. A decent amount of water for daily runs, depending on speed and sun exposure I would say 1-2 hrs. The only hiccup I have noticed is the screw on top with the hose attached can be a little tricky to get on without spilling some water. Other hydration packs have a slide that seals the reservoir; I can see why the screw top here, based on minimalist approach. It is worth the small effort with closing to be able to have a smaller pack to carry. ## Features - HYDRATION ON THE MOVE: Our collapsible water bottle is a compact and eco-friendly way to stay hydrated on the move! The soft water bottle is the perfect hydration tool for active individuals. Our running water bottle shrink as you drink, taking up minimal space and won’t slosh around, making it perfect for runners and vigorous activities. - SHRINKS AS YOU DRINK: Our collapsible water bottle is uniquely designed to shrink as you drink. This ensures the water doesn’t slosh around, bounce or rattle. The flexible design of our soft flask running bottles shapes to your hand & body, meaning the soft flask is never unwieldy. Our flexible water bottle features an intelligent bite valve & leak-resistant mouthpiece. - STAY LIGHT ON YOUR FEET: FITLY’s collapsible flask is purposely lightweight ensuring your light on your feet and not weighted down by unnecessary bulk. At FITLY, reusability is deeply important to us, and our water bladder is no exception. Enjoy limitless use from our portable water flask that is 100% BPA & PVC-free. - HYDRATION ON THE MOVE: Our soft flask is specially crafted for vigorous activities such as running, hiking, cycling and climbing. The perfect sporting companion, take it everywhere with you! Our soft water bottle can be folded and tucked into your pocket or bag. Our soft flask comes in 5 size variations and are freezable so they can double as an ice pack. - DIRECTIONS FOR USE: We recommend rinsing the flask thoroughly before first use. If you experience taste mix ½ a teaspoon of BAKING SODA with water, shake and rinse. Users have also found the following to be useful: Fill with MILK, shake, and rinse. Add drops of lemon. Let an orange peel or tea bag set in the flask for a couple of hours. To hydrate, simply softly bite the mouthpiece and press the soft flask and enjoy! The harder you press, the faster the liquid will exit. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BBG7TZFL | | Additional Features | Freezable, Leak Proof, Lightweight | | Age Range Description | Any Age Group | | Best Sellers Rank | #28,251 in Sporting Goods ( See Top 100 in Sporting Goods ) #19 in Camping & Hiking Hydration Flasks | | Bottle Type | Collapsible Bottle | | Brand Name | FITLY | | Capacity | 150 Milliliters | | Color | Black | | Container Type | Soft flask or bottle | | Customer Reviews | 4.2 4.2 out of 5 stars (3,428) | | Finish Types | Glossy | | Included Components | F1B | | Item Dimensions W x H | 7W x 14H centimeters | | Item Type Name | Running Accessory | | Item Weight | 0.02 Kilograms | | Manufacturer | FITLY | | Material Type | Polyvinyl Chloride | | Material Type Free | BPA Free, PVC Free | | Model Name | F1B | | Number of Items | 1 | | Product Care Instructions | Hand wash only with warm water | | Recommended Uses For Product | running, cycling, hiking | | Reusability | Reusable | | Shape | Rectangular prism with rounded corners | | Sport Type | Climbing, Football, Swimming, Tennis | | Style Name | Contemporary | | Theme | Sport | | Unit Count | 1.0 Count | ## Product Details - **Bottle type:** Collapsible Bottle - **Brand:** FITLY - **Capacity:** 150 Milliliters - **Colour:** Black - **Material:** Polyvinyl Chloride ## Images ![FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) - Image 1](https://m.media-amazon.com/images/I/61wN+P6myEL.jpg) ![FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) - Image 2](https://m.media-amazon.com/images/I/71Omr2OCZlL.jpg) ![FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) - Image 3](https://m.media-amazon.com/images/I/71rF0bPwbYL.jpg) ![FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) - Image 4](https://m.media-amazon.com/images/I/71+QW60DNwL.jpg) ![FITLY Soft Flask - 5 oz (150 ml) - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle For Running & Hiking - Portable Water Flask - Running Water Bottle (F1B) - Image 5](https://m.media-amazon.com/images/I/716Hwt0pDcL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by N***T on 9 June 2024* Maraton ve orta mesafe koşulları için çok güzel. ### ⭐⭐⭐⭐⭐ Review *by K***E on 16 June 2023* I live in Fl, and I run outside. Those two components demand that I hydrate or die. I prefer the land of the living for now, so gimme the H2O. I already had the Fitly minimal pack, just not this particular flask. I originally thought I would have to bite the bullet and get a new pack altogether, but then I found the flask available by itself. I ordered, it arrived, and I have been using it for a couple weeks now. A decent amount of water for daily runs, depending on speed and sun exposure I would say 1-2 hrs. The only hiccup I have noticed is the screw on top with the hose attached can be a little tricky to get on without spilling some water. Other hydration packs have a slide that seals the reservoir; I can see why the screw top here, based on minimalist approach. It is worth the small effort with closing to be able to have a smaller pack to carry. ### ⭐⭐⭐⭐⭐ Review *by T***X on 19 March 2023* I love using soft water bottles because they don't take up much space. They are lightweight, flexible and collapsable which is ideal for when I go running! And this one fits perfectly into my waist bag :) It's also leakproof and I did not notice any bad taste in my water plus I really like this type of mouthpiece! ## Frequently Bought Together - FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Fitgriff® Running Belt for Men & Women - Secure Jogging Pouch for Phone, Keys & Essentials - For All Cell Phones - FlipBelt Classic Running Belt, Running Fanny Pack for Women and Men, USA Company --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/538578003-fitly-soft-flask-5-oz-150-ml-shrink-as-you](https://www.desertcart.us/products/538578003-fitly-soft-flask-5-oz-150-ml-shrink-as-you) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-25*